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The Mazda RX-7 FD is a legendary sports car known for its lightweight design and rotary engine. For enthusiasts looking to enhance their driving experience, upgrading the turbocharger is a popular choice. This article explores the top turbocharger upgrades for the FD RX-7 that can help you achieve 350+ horsepower without breaking the bank.
Understanding the Rotary Engine
The RX-7’s rotary engine is unique compared to traditional piston engines. It provides a high power-to-weight ratio and is known for its smooth power delivery. However, to reach higher horsepower levels, especially 350+, modifications are essential.
Why Upgrade the Turbocharger?
Upgrading the turbocharger can significantly increase horsepower and torque. A larger turbocharger allows for more air intake, which in turn can increase the engine’s power output. Here are some reasons why upgrading is beneficial:
- Improved horsepower and torque
- Better throttle response
- Enhanced performance at higher RPMs
Top Turbocharger Upgrades
1. Garrett GT28RS
The Garrett GT28RS, also known as the Disco Potato, is a popular choice among RX-7 enthusiasts. It provides quick spool-up and can support power levels up to 350 hp. Its compact size makes it a perfect fit for the FD RX-7.
2. BorgWarner EFR 7670
The BorgWarner EFR 7670 is another excellent turbocharger option. It features advanced aerodynamics and an integrated wastegate. This turbo can produce up to 400 hp, making it a versatile choice for those looking to push their RX-7 beyond 350 hp.
3. Precision Turbo PT5858
The Precision PT5858 is known for its efficiency and ability to support high horsepower levels. With the right supporting mods, it can easily help your RX-7 reach 350 hp while maintaining reliability.
4. Holset HX35
The Holset HX35 is a budget-friendly option that offers great performance. It’s widely used in the rotary community and can provide a solid boost in power, making it a great choice for those on a budget.
Supporting Modifications
To maximize the potential of your upgraded turbocharger, certain supporting modifications are necessary. Here are some essential upgrades to consider:
- Upgraded fuel injectors
- High-flow fuel pump
- Aftermarket intercooler
- ECU tuning
- Exhaust upgrades
Installation Considerations
When installing a new turbocharger, it’s crucial to ensure proper fitment and alignment. Here are some tips for a successful installation:
- Use quality gaskets and hardware
- Follow the manufacturer’s instructions
- Check for any boost leaks post-installation
- Consider professional installation if unsure
Tuning Your RX-7
After upgrading your turbocharger, tuning is essential to ensure optimal performance. A proper tune will adjust fuel maps and ignition timing to match the new turbo setup, allowing you to achieve the desired horsepower and maintain engine reliability.
Conclusion
Upgrading the turbocharger on your FD RX-7 is one of the most effective ways to achieve 350+ horsepower on a budget. With options like the Garrett GT28RS and BorgWarner EFR 7670, you can find a turbo that fits your performance goals and budget. Remember to invest in supporting modifications and proper tuning to maximize your RX-7’s potential.